Beyond scrum: when to use kanban or scrumban in your teams - professional agile coach

In the world of agile software development, Scrum has long been the dominant methodology. However, it is not the only option. Kanban and Scrumban, often overshadowed by Scrum, offer valuable alternatives that may be better suited for certain teams and projects. This article explores the key differences between Scrum, Kanban and Scrumban, and will help you determine which is the best choice to optimize your team's productivity and workflow.

Why consider alternatives to Scrum?

Although Scrum provides a solid structure with sprints, defined roles and specific ceremonies, its rigidity may not be ideal for all environments. Some companies find the fixed timeboxes of sprints restrictive, or that the constant need for planning and retrospectives is too resource-intensive. Others simply prefer a more flexible and adaptable approach. This is where Kanban and Scrumban come into play.

Kanban: Visualization and Continuous Flow

What is Kanban?

Kanban is an agile methodology that focuses on visualizing the workflow, limiting work in progress (WIP, *Work In Progress*), and continuous improvement. Unlike Scrum, Kanban does not use sprints. Instead, tasks move across a Kanban board, representing the different stages of the work process (for example, "To Do", "In Progress", "In Review", "Done").

Key principles of Kanban:

• Visualize the workflow: Use a Kanban board to make the work process and tasks at each stage visible.
• Limit work in progress (WIP): Restrict the number of tasks in each stage of the workflow to avoid bottlenecks and improve efficiency.
• Manage the flow: Optimize the workflow to reduce delivery times and improve predictability.
• Make process policies explicit: Clearly define the rules and policies that govern the workflow.
• Implement feedback loops: Conduct periodic reviews to identify areas for improvement and adjust the process.
• Improve collaboratively, evolve experimentally (using models and the scientific method): Foster a culture of continuous improvement based on data and experimentation.

When to use Kanban:

• Teams that need flexibility: When requirements change frequently or are not clearly defined upfront.
• Projects with continuous work flow: Suitable for support, maintenance, or processes where there is no defined end.
• Improve an existing process: Kanban can be applied over an existing process without disrupting the workflow.

Scrumban: The Hybridization of Scrum and Kanban

What is Scrumban?

Scrumban is a hybrid methodology that combines elements of Scrum and Kanban. It seeks the flexibility of Kanban with the structure of Scrum, offering an approach that is more adaptable than pure Scrum. Generally, Scrumban teams retain some of Scrum's ceremonies (such as daily meetings), but remove fixed sprints and adopt Kanban's continuous flow system.

Main characteristics of Scrumban:

• Kanban board: Used to visualize the workflow and manage tasks.
• No fixed sprints: Tasks are completed continuously, without the obligation to fit into a predefined sprint.
• Daily Stand-ups: Daily meetings are kept to synchronize the team and address possible obstacles.
• On-demand planning: Planning is done as needed, rather than at the start of each sprint.
• Optional retrospectives: Retrospectives are held as needed to identify areas for improvement.

When to use Scrumban:

• Teams transitioning from Scrum: Ideal for teams that want to reduce Scrum's rigidity without completely abandoning its structure.
• Projects with changing requirements: Suitable for projects where flexibility and adaptability are crucial.
• Teams that need a lightweight structure: Offers a lighter structure than Scrum, but still provides some guidance and discipline.

Direct Comparison: Scrum vs. Kanban vs. Scrumban

To help you decide which is best for your team, here is a comparative table:

Choosing the Right Methodology: Factors to Consider

The choice between Scrum, Kanban and Scrumban depends on several factors:

• The nature of the project: Is it a project with clear and defined requirements, or a project with changing and emerging requirements?
• Team culture: Does the team prefer a defined structure, or a more flexible and self-organized approach?
• The team's level of experience with agile methodologies: Is the team new to agile methodologies, or already experienced with Scrum or other methodologies?
• The need for predictability: Is it important to have accurate predictability of delivery times, or is adaptability to changes more important?